SAP-C02 Continuous Improvement for Existing Solutions Practice Question
A company uses Amazon CloudFront with an S3 origin to serve static content. They recently updated the content in S3, but users still see the old files. What is the MOST likely reason?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The CloudFront distribution's cache TTL is too long
CloudFront caches objects at edge locations based on TTL; if the TTL has not expired, users will get cached old content. Option B is wrong because S3 versioning does not affect cache invalidation. Option C is wrong because CloudFront does not have a 'Cache-Control' header by default; it's set by the origin. Option D is wrong because S3 Transfer Acceleration is irrelevant to caching.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The CloudFront distribution's cache TTL is too long
Why this is correct
CloudFront caches content; long TTL prevents immediate updates.
- ✗
S3 versioning is enabled and the objects are not updated
Why it's wrong here
Versioning does not affect cache behavior.
- ✗
CloudFront is not configured to forward the Cache-Control header
Why it's wrong here
CloudFront respects Cache-Control from origin, but not having it does not cause old content to be served.
- ✗
S3 Transfer Acceleration is disabled
Why it's wrong here
Transfer Acceleration is for faster uploads, not caching.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.